<template>
  <!-- 主体部分 -->
  <section class="main">
    <!-- 全选反选按钮 -->
    <input v-model="isall" id="toggle-all" class="toggle-all" type="checkbox" />
    <label for="toggle-all" >Mark all as complete</label>
    <ul class="todo-list">
      <!-- 当任务已完成，可以给 li 加上 completed 类，会让元素加上删除线 -->
      <li v-for="item in list" :key="item.id" :class={completed:item.done}>
        <div class="view">
          <input :checked='item.done' @change="handleChange($event,item.id)" class="toggle" type="checkbox" />
          <label>{{ item.name }}</label>
          <button class="destroy" @click="$emit('remove-event',item.id)"></button>
        </div>
      </li>
    </ul>
  </section>
</template>

<script>
export default {
  props: {
    list: {
      type: Array,
      required: true,
    },
  },
  computed: {
   isall:{
    get (){
      return this.list.every(item=>item.done===true)
    },
    set (val) {
      this.$emit("changeIsall", val)
   }
  },
  },
  methods: {
    handleChange (e,id) {
      this.$emit( 'changeState',e.target.checked,id)
    }
    }

};
</script>

<style></style>
